Composite myopia prevention and control lens

Abstract

The utility model relates to a composite myopia prevention and control lens which comprises a lens body, and the lens body is provided with a first curved surface facing the eyes and a second curved surface back to the eyes. A bright visual area and a light diffusion area surrounding the bright visual area are arranged on the first curved surface; the second curved surface is provided with an out-of-focus area formed by a micro-lens array and a scale auxiliary area; under a main view angle, the defocus area surrounds the bright view area, and the scale auxiliary area surrounds the defocus area. The beneficial effects are that the contrast is reduced through the light diffusion area, the defocus effect is realized through the defocus area of the microlens array, vision deepening can be effectively inhibited through combination of the light diffusion area and the defocus area, and the myopia prevention and control effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lenses, and in particular to a composite myopia prevention and control lens. Background Art

[0002] Myopia is a refractive state in which parallel light rays are refracted through the eye's refractive system and the focus falls in front of the retina, so myopic eyes cannot see distant targets clearly. If the target is gradually moved closer to the eye, the emitted light will be dispersed to a certain extent to the eye, and the focus will move backward. When the target object moves closer to a certain point in front of the eye, the closer this point is to the eye, the deeper the myopia. At this stage, there is no theoretical system that can explain all the doubts about the causes and control mechanisms of myopia, and there are certain limitations. People spend more and more time using electronic devices with display screens such as mobile phones and computers in their daily lives. Although their fine and bright pictures will bring a good visual experience, they also have a strong contrast that will stimulate the growth of the eye axis and affect vision. Therefore, reducing the contrast also provides a new idea for myopia prevention and control, and it has been proven to be highly feasible through clinical practice.

[0003] At present, the commonly used myopia prevention and control lenses are defocus lenses, which use the principle of myopia defocus to correct the central refractive error while using the peripheral relative positive power to correct the peripheral retinal hyperopic defocus of myopia, thereby inhibiting the eye axis growth and myopia progression induced by the peripheral retinal hyperopic defocus, so as to delay the worsening of vision. However, traditional defocus lenses cannot change the contrast of the image on the retina, and the myopia prevention and control effect is not ideal in the environment where people use them in daily life.

[0004] Therefore, there is an urgent need for a composite myopia prevention and control lens that can reduce retinal imaging contrast while taking into account the defocus effect. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a composite myopia prevention and control lens, which solves the technical problem that the prior art cannot reduce the contrast and has an unsatisfactory myopia prevention and control effect.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] The utility model provides a composite myopia prevention and control lens, comprising a lens body, wherein the lens body has a first curved surface facing the eye and a second curved surface facing away from the eye; a clear vision area and a light diffusion area surrounding the clear vision area are provided on the first curved surface; a defocus area and a scale auxiliary area formed by a microlens array are provided on the second curved surface; under the main viewing angle, the defocus area surrounds the clear vision area, and the scale auxiliary area surrounds the defocus area.

[0010] Optionally, the light diffusion area includes a plurality of scattering points; the plurality of scattering points surround the clear vision area to form a scattering ring, and the plurality of scattering rings are diffusely distributed from the inside to the outside with the clear vision area as the center.

[0011] Optionally, the diameter of the scattering points ranges from 0.1 to 0.5 mm.

[0012] Optionally, the microlens array includes a plurality of microlenses; the plurality of microlenses form a microlens ring around the clear vision area, and the plurality of microlens rings diffuse from inside to outside around the clear vision area.

[0013] Optionally, the number of the microlens rings is 7-12.

[0014] Optionally, the defocus degree of the microlens ring is +3.00D to +6.00D.

[0015] Optionally, the scale auxiliary area includes a plurality of reference lines evenly arranged around the light diffusion area; the reference lines are located on the bisector of the clear vision area.

[0016] Optionally, the shape of the defocus area is a regular polygon or a circle.

[0017] Optionally, the clear vision area is circular in shape, and its diameter is 3 to 5 mm.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are:

[0020] The utility model provides a composite myopia prevention and control lens, which can focus the light beam on the retina to ensure normal vision through the clear vision area on the lens; can reduce the contrast and brightness of the image in front of the line of sight on the retina through the light diffusion area, and reduce the hue difference; by arranging a microlens array on the lens body, when the myopia defocus lens is used, the light beam entering the user's eye forms myopia defocus, and the object is imaged in front of the retina, which can avoid the growth of the eye axis and delay and / or control the deepening of myopia. Compared with the prior art, it realizes contrast reduction through the light diffusion area, and realizes the defocus effect through the defocus area of ​​the microlens array. The combination of the two can effectively inhibit the deepening of vision and greatly improve the myopia prevention and control effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic front view of the composite myopia prevention and control lens in Example 1 of the utility model;

[0022] Figure 2 for Figure 1 Magnified view of point A in ).

[0023] Figure 3 It is a side view schematic diagram of the composite myopia prevention and control lens in Example 1 of the utility model.

[0024] [Description of Reference Numerals]

[0025] 1: lens body; 11: first curved surface; 12: second curved surface;

[0026] 2: bright field;

[0027] 3: light diffusion area; 31: scattering point;

[0028] 4: out-of-focus area; 41: microlens;

[0029] 5: scale auxiliary area; 51: baseline. DETAILED DESCRIPTION

[0030] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0031] Embodiment 1:

[0032] like Figure 1-Figure 3 As shown, this embodiment provides a composite myopia prevention and control lens, including a lens body 1, the lens body 1 having a first curved surface 11 facing the eye and a second curved surface 12 facing away from the eye. A clear vision area 2 and a light diffusion area 3 surrounding the clear vision area 2 are provided on the first curved surface 11, and a defocus area 4 and a scale auxiliary area 5 formed by a microlens array are provided on the second curved surface 12; under the main viewing angle, the defocus area 4 surrounds the clear vision area 2, and the scale auxiliary area 5 surrounds the defocus area 4. In this embodiment, the shape of the clear vision area 2 is circular, and its diameter is 3 to 5 mm.

[0033] Specifically, the light beam can be focused on the retina to ensure normal vision through the clear vision area 2 on the lens; the contrast and brightness of the image in front of the line of sight on the retina can be reduced through the light diffusion area 3, and the hue difference can be reduced; by setting a microlens array on the lens body 1, when the myopic defocus lens is used, the light beam entering the user's eye forms myopic defocus, and the object is imaged in front of the retina, which can avoid the growth of the eye axis and delay and / or control the deepening of myopia. Compared with the prior art, it achieves contrast reduction through the light diffusion area 3, and at the same time achieves a defocus effect through the defocus area 4 of the microlens array. The combination of the two can effectively inhibit the deepening of vision and greatly improve the myopia prevention and control effect.

[0034] Furthermore, in the radial outward direction from the central area of ​​human vision, the lens should provide a gradually increasing defocus amount for myopic users to meet the physiological characteristics of the human eyeball. As shown in the figure, in this embodiment, the microlens array is formed by a plurality of microlenses 41, and the plurality of microlenses 41 form a microlens ring around the clear vision area 2, and the plurality of microlens rings spread from the inside to the outside around the clear vision area 2. Among them, the number of microlens rings is 7 to 12, and the defocus degree of the microlens ring is +3.00D to +6.00D, which is adapted to different eye conditions so as to present a clear and stable image on the retina.

[0035] Furthermore, if Figure 1 and Figure 2 As shown, the light diffusion area 3 includes a plurality of scattering points 31; the plurality of scattering points 31 surround the clear vision area 2 to form a scattering ring, and the plurality of scattering rings are diffusely distributed from the inside to the outside with the clear vision area 2 as the center. In order to adapt to the requirements of retinal contrast reduction in different situations, the diameter range of the scattering point 31 is 0.1 to 0.5 mm. If the eye refractive power is less than -3.00D, a slight reduction can be selected: the diameter of the scattering point 31 is 0.1 to 0.3mm, and the spacing between the scattering points 31 is 0.24 to 0.94mm; if the eye refractive power is between -3.00D and -6.00D, a moderate reduction can be selected: the diameter of the scattering point 31 is 0.2 to 0.4mm, and the spacing between the scattering points 31 is 0.34 to 1.04mm; if the eye refractive power is greater than -6.00D, a high reduction can be selected: the diameter of the scattering point 31 is 0.3 to 0.5mm, and the spacing between the scattering points 31 is 0.44 to 1.14mm. However, each person's glasses are different, and the doctor or optometrist will choose the appropriate gear based on the refractive power and axial length of the eye.

[0036] Furthermore, if Figure 1As shown, the scale auxiliary area 5 includes a plurality of reference lines 51 evenly arranged around the light diffusion area 3, and the reference lines 51 are located on the bisector of the clear vision area 2. In the process of customizing the lens, the intersection of the straight lines where the two reference lines 51 are located is the geometric center point. By processing the optical center based on this point, the optical center can be guaranteed to correspond to the defocused geometric center position, thereby ensuring the subsequent accurate fitting and pupil correspondence, and then ensuring the vision correction and prevention and control effects of the lens, and improving wearing comfort and compliance.

[0037] Embodiment 2:

[0038] This embodiment provides a pair of glasses including the moderate myopia prevention and control lenses described in Example 1.

[0039] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A composite myopia prevention and control lens, characterized in that: The lens body (1) comprises a first curved surface facing the eye and a second curved surface (12) facing away from the eye; The first curved surface (11) is provided with a clear vision area (2) and a light diffusion area (3) surrounding the clear vision area (2); The second curved surface (12) is provided with a defocusing area (4) formed by a microlens array and a scale auxiliary area (5); In the main viewing angle, the defocusing area (4) surrounds the clear vision area (2), and the scale auxiliary area (5) surrounds the defocusing area (4).

2. The composite myopia prevention and control lens according to claim 1, characterized in that: The light diffusion area (3) comprises a plurality of scattering points (31); A plurality of the scattering points (31) surround the clear vision area (2) to form a scattering ring, and the plurality of the scattering rings are diffusely distributed from the inside to the outside with the clear vision area (2) as the center.

3. The composite myopia prevention and control lens according to claim 2, characterized in that: The diameter of the scattering points (31) ranges from 0.1 to 0.5 mm.

4. The composite myopia prevention and control lens according to claim 1, characterized in that: The microlens array comprises a plurality of microlenses (41); The plurality of microlenses (41) surround the clear vision area (2) to form a microlens ring, and the plurality of microlens rings surround the clear vision area (2) and spread from the inside to the outside.

5. The composite myopia prevention and control lens according to claim 4, characterized in that: The number of the microlens rings is 7 to 12.

6. The composite myopia prevention and control lens according to claim 4, characterized in that: The defocus degree of the microlens ring is +3.00D to +6.00D.

7. The composite myopia prevention and control lens according to claim 1, characterized in that: The scale auxiliary area (5) comprises a plurality of reference lines (51) uniformly arranged around the light diffusion area (3); The reference line (51) is located on the bisector of the clear vision area (2).

8. The composite myopia prevention and control lens according to claim 1, characterized in that: The defocusing area (4) is in the shape of a regular polygon or a circle.

9. The composite myopia prevention and control lens according to claim 1, characterized in that: The clear vision area (2) is circular in shape, and its diameter is 3 to 5 mm.

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